<template>
  <div id="app">
    <div>
      <span>姓名:</span>
      <input type="text" v-model.trim="name" />
    </div>
    <div>
      <span>年龄:</span>
      <input type="number" v-model.number="age" />
    </div>
    <div>
      <span>性别:</span>
      <select v-model="gender">
        <option value="男">男</option>
        <option value="女">女</option>
      </select>
    </div>
    <div>
      <button @click="add">添加/修改</button>
    </div>
    <div>
      <table border="1" cellpadding="10" cellspacing="0">
        <tr>
          <th>序号</th>
          <th>姓名</th>
          <th>年龄</th>
          <th>性别</th>
          <th>操作</th>
        </tr>
        <tr v-for="(item, index) in arr" :key="index">
          <td>{{ index + 1 }}</td>
          <td>{{ item.name }}</td>
          <td>{{ item.age }}</td>
          <td>{{ item.gender }}</td>
          <td>
            <button @click="del(index)">删除</button>
            <button @click="bj(index)">编辑</button>
          </td>
        </tr>
      </table>
    </div>
  </div>
</template>
<script>
export default {
  data () {
    return {
      boolean: false,
      bl: '',
      name: '',
      age: 0,
      gender: '男',
      arr: [
        {
          name: 'Tom',
          age: 19,
          gender: '男'
        },
        {
          name: 'Jone',
          age: 12,
          gender: '女'
        }
      ]
    }
  },
  methods: {
    add () {
      if (!this.name || !this.age || !this.gender) {
        alert('请填写完整信息！')
      }
      if (!this.boolean) {
        this.arr.push({ name: this.name, age: this.age, gender: this.gender })
      } else {
        this.arr.splice(this.bl, 1, {
          name: this.name,
          age: this.age,
          gender: this.gender
        })
        this.boolean = false
        this.name = this.age = this.gender = ''
      }
    },
    bj (index) {
      this.boolean = true
      this.bl = index
      this.name = this.arr[index].name
      this.age = this.arr[index].age
      this.gender = this.arr[index].gender
    },
    del (index) {
      this.arr.splice(index, 1)
    }
  }
}
</script>